GLP-3 (RT)

Triple-receptor agonist. GLP-3 (RT) is a synthetic, single-chain peptide developed as a single-molecule agonist that engages three receptor systems at once. It is a 39-residue chain carrying a fatty-acid modification that supports reversible albumin binding — a strategy used in research to slow enzymatic degradation and extend peptide stability under study conditions. Brightly supplies it as a lyophilized (freeze-dried) powder in a sealed, tamper-evident vial, prepared and handled strictly as a characterised reference material for in-vitro laboratory research.

Where a single- or dual-receptor agonist engages one or two of these pathways, GLP-3 (RT) is characterised for activity at all three — the receptor coverage that sets it apart from its GLP-1 (SM) and GLP-2 (TZ) siblings:

Each receptor system it is characterised for — glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon (GCGR) — is studied in controlled metabolic-signaling research. Owing to this multi-receptor profile, GLP-3 (RT) is used in laboratory settings to study receptor pharmacology, metabolic-signaling pathways, and peptide stability.

Supplied strictly as a characterised reference material for in-vitro and preclinical laboratory work, not for any diagnostic or therapeutic purpose.

Research overview

GLP-3 (RT) is supplied as a characterised reference material for controlled in-vitro and preclinical laboratory work. It is synthesised and purified to industry-standard protocols, making it suitable for analytical testing, receptor-pharmacology studies, and experimental metabolic models. Every lot is verified by HPLC for purity and identity, with a lot-specific Certificate of Analysis included.

Research-grade standards behind each batch

• Synthesised via solid-phase peptide synthesis (SPPS)
• Purified using preparative HPLC
• Verified through analytical quality-control procedures
• Screened for endotoxins by LAL
• Identity confirmed by HPLC

Why researchers study GLP-3 (RT)

Published preclinical and clinical literature describes single-molecule triple-receptor agonists engaging several interconnected metabolic-signaling pathways at once,¹ which makes them of interest for studying complex physiological systems. Areas of scientific interest include:

• Energy-metabolism pathways
• Glucose-regulation mechanisms
• Hepatic signaling networks
• Receptor-crosstalk studies
• Peptide disposition and stability
• Mitochondrial-biology investigations

Triple-agonist signaling

GLP-3 (RT) is characterised for activity at GLP-1, GIP, and glucagon (GCGR) receptors.

GLP-1 receptor. Expressed across pancreatic tissue, the gastrointestinal tract, and regions of the central nervous system; studied for insulinotropic signaling and related metabolic pathways.

GIP receptor. Studied for its role in energy and nutrient sensing, including lipid-metabolism pathways, adipocyte signaling, and metabolic-flexibility models.

Glucagon receptor (GCGR). Predominantly hepatic; studied for hepatic glucose regulation, energy-expenditure pathways, and substrate oxidation. Glucagon-receptor activity is what distinguishes triple agonists from dual-agonist compounds.

Triple- vs dual-agonist peptides

Reference. Jakubowska A, le Roux CW, Viljoen A. The road towards triple agonists: glucagon-like peptide 1, glucose-dependent insulinotropic polypeptide and glucagon receptor — an update. Endocrinol Metab (Seoul). 2024;39(1):12–22.

Supplied strictly as a characterised reference material for in-vitro and preclinical laboratory work, not for any diagnostic or therapeutic purpose.

Every lot of GLP-3 (RT) follows a controlled, pharma-grade workflow from synthesis to fulfilment, so the material stays consistent, pure, and stable.

Cleanroom manufacturing

Synthesised in controlled, low-contamination environments for batch-to-batch consistency.

≥99% HPLC-verified purity

Purity confirmed by high-performance liquid chromatography (HPLC).

Verified identity & purity

Identity and purity confirmed by HPLC, and endotoxin by Limulus Amebocyte Lysate (LAL).

Endotoxin-controlled

Low endotoxin levels matter in sensitive receptor-signaling studies where inflammatory contaminants could confound results.

Pharma-grade raw materials

Synthesis begins with tested amino acids and validated reagents to protect molecular integrity.

Lyophilized for stability

Freeze-drying preserves structural integrity during shipping, storage, and handling.

Nitrogen-sealed vials

Vials are sealed under nitrogen to limit exposure to oxygen and moisture.

Understanding lyophilization. Freeze-drying removes moisture by freezing the peptide and lowering pressure so water sublimates directly from solid to vapour, leaving a stable, crystalline white powder that tolerates storage well for long-term studies.

Before reconstitution. Unopened lyophilized GLP-3 (RT) tolerates short periods at room temperature in a cool, dry place away from heat, humidity, and light. For longer storage, keep sealed vials frozen: −20 °C is common, while −80 °C adds margin for long-term or archival storage.

After reconstitution. Reconstitute with bacteriostatic water, then keep the solution refrigerated below 4 °C, aliquot to working volumes, and avoid repeated freeze–thaw cycles. Under appropriate laboratory conditions, reconstituted solutions typically remain stable for up to 30 days, following your own laboratory protocol.

Same-day dispatch (USA)

In-stock orders placed before 1:00 PM CT ship the same business day.

Fast domestic delivery

Free FedEx shipping on every order; express delivery is free on orders over $150.

Protective handling

Vials are held in temperature-controlled storage before shipment; the lyophilized powder is stable for ambient transit and is packed to limit temperature swings, moisture, and physical damage.

Tracking and guarantee

Tracking is provided at shipment, and every order is backed by our 30-day money-back guarantee.

See our Shipping and Refund policies for full details.